function GetNettopo1() {
	var panel = new Ext.Panel({
				frame : true,
				layout : 'form',
				bodyStyle: "background-color:#ffffff", 
				tbar : [{
							text : '刷新',
							tooltip : '刷新',
							iconCls : 'refresh',
							handler : function() {	
								document.frames('nettopo').location.reload()	
							}
						}],
				html: "<iframe src='nettopo.html'  id='nettopo' name='nettopo' height=100% width=100% frameborder=no border=0 marginwidth=0 marginheight=0  allowtransparency=yes></iframe>"

			})
	
	return panel;
}	
